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1153 - Object Oriented Model - a summary of changes from PHP4 to PHP5
What are the differences between the Object Oriented model in PHP5 and PHP4? Firstly (and the reason the release number jumped) is that assignments copy references in PHP5 (which is regarded as correct OO behaviour) but they duplicate or clone the object in PHP4. This may sound a bit obtuse, but: * ....

1152 - Course, right place, right time
Courses tend to be in the right place at the wrong time to look around at pretty places, or in the wrong place (nothing much to see) at the right time of year. But just ocasionally, I do have an opportunity to wander out of my hotel and look around at some lovely places ... Last night in Herefor ....

1151 - Gordon Dodge, R.I.P.
Gordon Dodge, who helped fight such long odds to get Melksham station re-opened in 1985 - and won - passed away yesterday. My deepest sympathy goes to his wife Audrey and family who have lost a remarkable husband and father. When I started the "Save the Train" campaign 2 summers ago, Gordon welcom ....

1150 - Helsinki - what comes naturally
Even when it's sweltering in England, it's quite cold in Helsinki and everyone was heavily clothed - I suspect that there was a hot water bottle (and perhaps an iPod too) under that hat. So perhaps it's as an educational aid to the locals that statues such as this may be found in the local park (or ....

1149 - Turning objects into something you can store - Pickling (Python)
If you're working with objects in an OO language and you want to transfer them to another computer ... or simple save them from the current application for reloading into that application or another one on the same computer later on, you need to serialize the objects. Data within OO programming la ....

1148 - Python decorators - wrapping a method call in extra code
Would you like to add an extra set of wrappers around a series of function of method calls - perhaps to add a profiler or logger to your application? These are examples of the things you can do with Python's decorators, introduced (with the syntax I'll show you below) in Python 2.4. Here's a class ....

1147 - A picture (mostly in words) of Helsinki
It's a while - a long while - since I wrote a travalogue of one of my journeys - things have gone from busy to mad to manic over the past year and that's hardly a suprise - in the last year we have bought a house, refurbished it into a high quality hotel, planned all the rooms, staffing, systems, op ....

1146 - __new__ v __init__ - python constructor alternatives?
The constructor you'll normally override (and call when you create an object) in Python is called __init__, but there is also a method called __new__ available to the class author. If __new__ is defined on a class, it is called in preference to __init__ With __new__ you return the object you have c ....

1145 - Using a list of keys and a list of values to make a dictionary in Python - zip
If you have two lists in Python and you want to use them as the keys and values of a dictionary, you might be interested on Python's zip function. It's NOT the use of zip as we know it for file compression - rather it's used to interlace (combine) elements of two lists into a list of lists. Here's ....

1144 - Python dictionary for quick look ups
Using a dictionary in Python, you can avoid the need for a loop in your program to search out elements in a collection. Suppose, for example, you have a list of people and a list of their countries of origin, you could look up individuals like this: names = ["Jesus","Marc","Michal","Graham"] places ....

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